CN1703135B - Ballast for discharge lamp with continuous operation regulating circuit and drive method of the lamp - Google Patents
Ballast for discharge lamp with continuous operation regulating circuit and drive method of the lamp Download PDFInfo
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- CN1703135B CN1703135B CN2005100783604A CN200510078360A CN1703135B CN 1703135 B CN1703135 B CN 1703135B CN 2005100783604 A CN2005100783604 A CN 2005100783604A CN 200510078360 A CN200510078360 A CN 200510078360A CN 1703135 B CN1703135 B CN 1703135B
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
- H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
- H05B41/295—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices and specially adapted for lamps with preheating electrodes, e.g. for fluorescent lamps
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
- H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
- H05B41/295—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices and specially adapted for lamps with preheating electrodes, e.g. for fluorescent lamps
- H05B41/298—Arrangements for protecting lamps or circuits against abnormal operating conditions
- H05B41/2988—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the lamp against abnormal operating conditions
Abstract
The invention relates to a novel ballast for a discharge lamp, in which a continuous-operation control circuit is brought out of operation when a physical operation, which defines a preheating time, of a preheating timer has as yet not been sufficiently returned if the lamp is intended to be restarted.
Description
Technical field
The present invention relates to a kind of ballast that is used for discharge lamp, and more definite theory, but the such discharge lamp of preheating electrode had.
Background technology
Such ballast is known.They often have the half-bridge inverter circuit.Yet the invention still further relates to other ballast.Basically, inverter circuit produces the output power that is used for lamp from the alternating-current voltage source of rectification or from direct voltage source, and it has the frequency higher than mains frequency.In many occasions, at this regulating circuit that is provided for regulating continuous operating lamp current of lamp or lamp power, it is called continuous operation regulating circuit below.This continuous operation regulating circuit influences the running frequency that inverter is given lamp in order to power supply, regulates lamp current or lamp power in addition.This by make running frequency near or realize away from the resonance frequency of the lamp resonant circuit that comprises lamp.
Before lamp can move, it must be lighted by a high relatively voltage.Also use a resonance excitation of lamp resonant circuit in many occasions for this reason.But in having the discharge lamp of preheating electrode, applying before the actual keep-alive voltage at first electrode preheating official hour.This should warm-up time by one warm-up time the element regulation, move a physical process that defines a time delay in it in the universal sense, and must reversing after finishing warm-up time, so that lamp can rerun once more when inserting again afterwards.Warm-up time, element had the effect of switch at this.Realize a kind of like this warm-up time element and the details of physical process unimportant to principle of the present invention, therefore select existing general elaboration.
Not relying on continuous operation regulating circuit lighting of this occasion lamp after described physical process finishes carries out.Must reach keep-alive voltage in some way, such as the resonance excitation that passes through in the lamp resonant circuit for this reason.Can disturb the effect of continuous operation regulating circuit this moment.
Summary of the invention
The present invention is based on described technical problem, but provides a kind of improved ballast with continuous operation regulating circuit and the improved operation method that is used to the discharge lamp of preheating electrode.
But the present invention relates to be used for the electric ballast that at least one has the discharge lamp of preheating electrode, described ballast has a continuous operation regulating circuit, be used for regulating continuous operating lamp current of lamp or lamp power by the running frequency of lamp, element warm-up time that is used to electrode to determine warm-up time, it is following purpose design, promptly determine warm-up time and allow thereafter to reverse this process with a time delay by a physical process with the operation of time delay.Wherein, ballast is following purpose design, promptly when warm-up time element physical process when finishing lamp do not rely on continuous operation regulating circuit and light, it is characterized in that, ballast also is following purpose design in addition, promptly when warm-up time element because still unclosed reversing of its physical process and when determining any complete new warm after can not outage at lamp, make continuous operation regulating circuit for lamp continuously operation do not work, make lamp can be independent of continuous operation regulating circuit at that time and light.
The present invention is also at a kind of corresponding operation method in addition.Wherein: use its interior physical process to come regulation warm-up time, allow this physical process of reversing with a time delay then with element warm-up time of time delay operation; Preheating electrode during warm-up time; The physical process end time point of element is lit a lamp when warm-up time; When lamp moves continuously, use a continuous operation regulating circuit to regulate lamp current or lamp power by running frequency; In the method, when warm-up time element because a still unclosed reversing of its physical process and after the lamp outage, can not define any new warm the time, it is inoperative and make lamp be independent of continuous operation regulating circuit at that time and light to be used in the continuous operation regulating circuit of continuous operation.
The inventor determines that as starting point of the present invention the time delay of element may have problems from warm-up time.Determine the physical process of warm-up time also to reverse once more in all cases with a definite time delay.
This point for example for here between warming up period the PTC resistance by ohmic loss heat heating as warm-up time element preferred application be suitable for, on this thing PTC resistance in this its resistance value since the temperature that increases raise.Important and preferred here mechanism is the damping that with the PTC resistance value that increases the lamp resonant circuit descended this moment and because lighting of causing of the resonance excitation in it.Now when PTC resistance is heated, so it can only slowly cool off thereafter once more.In addition even should consider between the lamp continuous operating period PTC resistance is continued heating, because the little electric current that continues flows through it.That is cooling procedure is only closed the beginning of having no progeny at lamp.Occasion at the PTC resistance that uses for electric ballast needs tens of seconds usually to a few minutes, therefore the cooling significantly slowly about hundreds of millisecond more common than electrode.If that is discharge lamp connects after the short relatively time once more, then not enough coolings once more of PTC resistance perhaps generally are expressed as, warm-up time element fully reversing of physical process.May cause functional fault in this occasion, like this because the end of the falseness of warm-up time, continuous operation regulating circuit begins to have acted on or keeps working.This disturbs or stops new the lighting of lamp usually.
Above explanation also be applicable to following situation according to meaning, promptly warm-up time element physical process between the lamp continuous operating period, reverse that is operation back reversing when long.Still have this situation at that time, promptly lamp is only connected in short-term, but turn-offs once more immediately and connect once more soon relative thereafter.For example this occurs when a lamp, luminous element or luminaire are installed new, and this moment is should " duplicate test " functional.Operating personnel do not understand the background of new starting failure usually in this occasion, and think that lamp or luminous element damage.
Therefore the present invention's suggestion for the abundant occasion of reversing as yet of the physical process in the warm-up time element, makes continuous operation regulating circuit inoperative, can not rely on continuous operation regulating circuit and carries out so that make to rekindle.
Preferred this point realizes that by following manner modulating voltage, the current potential that draws thus or an other relevant therewith parameter are applied to the resonance-amplifier of continuous operation regulating circuit or the input of switching transistor.Only use the time portion or the associated arguments of continuous operation regulating circuit also enough certainly.This point is referring to embodiment.
Determined above, PTC resistance be common and preferred here warm-up time element.But it is also conceivable that other of element on the principle, particularly the switch by time network, the control of for example RC network warm-up time.
For the occasion of PTC resistance, the present invention provides in addition, the threshold component of preferably connecting with this PTC resistance, for example so-called TISP or SIDAC, that is under an assigned voltage threshold value threshold component of not conducting electric current.Produce the possibility of having discussed when beginning thus, PTC resistance promptly in parallel with lamp does not usually flow through electric current when continuous operation, and only flows through when applying high voltage in preheating and ignition phase.
Usually being necessary for continuous operation regulating circuit provides a lamp current to measure, and perhaps because will regulate lamp current self, perhaps will know lamp power from lamp current.Here the present invention advises different preferred versions.One can be measured lamp current with a coupling capacitor that the power supply branch of ballast is connected with the lamp electrode with being in series.Term " coupling capacitor " system refers to connect with lamp and stop the static direct current electric current to flow through the capacitor of lamp.
Preferably use at least one pair of diode that a branch is provided at this, wherein only measuring during the half-wave and therefore loss of energy not during another half-wave.There are one and a diode resistor in series connection for this reason.This point is referring to embodiment.
But the same suitable bigger a little solution of expense is a measuring transformer.Here preferred especially spill current transformer uses it can utilize preheat curent or the electric current that flows through electrode and for example PTC resistance in addition between continuous operating period is adjusted total lamp current.Only consider the actual electric current of crossing by the discharge stream in the lamp as lamp current thus.
Another preferred construction of the present invention provides a voltage regulator circuit, and it is used for regulating by the frequency of another transducer of half-bridge or ballast the keep-alive voltage of lamp resonant circuit.This voltage regulator circuit has advantage, because the quality that needs owing to the lamp resonant circuit when lighting by resonance excitation needs relatively accurate frequency adjustment.This regulating circuit can make resonance characteristics coupling or " following " of frequency and lamp resonant circuit now, limits keep-alive voltage by the change frequency especially this moment and carries out work.
Above-mentioned continuous operation regulating circuit can combine with voltage regulator circuit, makes both visit same control input for the running frequency of control transducer.Preferably can provide at this, this circuit is as the effect of electric current or power conditioning circuitry (that is continuous operation regulating circuit), as long as flow through the lamp current of rated value, that is lamp has been lighted and under other situation circuit adjustment " have priority ".Stated that the consideration to preheat curent or PTC resistor current has meaning at this when lamp is measured.But the lamp current that gears to actual circumstances that also can carry out the indifference current transformer is measured, for example by during the warm-up phase voltage measurement on the PTC resistance (perhaps also to a measuring resistance in parallel with this PTC resistance or that connect) being stoped Current Regulation.
In some occasion, ballast is provided with for driving a plurality of lamps.If with its series connection, then above-mentioned realization is not produced any important replenishing, as corresponding embodiment is represented.If with its parallel connection, then corresponding modulating voltage or associated parameter being applied on the meaning that XOR connects will be meaningful especially on the input of resonance-amplifier in the continuous operation regulating circuit or switching transistor.
Description of drawings
Describe the present invention in detail according to three embodiment below.Single feature disclosed herein also can be the invention of essence in other combination.Above and the explanation of back represent device class of the present invention and method classification, clearly narration no longer one by one.
Fig. 1 represents the circuit diagram of the first embodiment of the present invention.
Fig. 2 represents the circuit diagram of the second embodiment of the present invention.
Fig. 3 represents the circuit diagram of the third embodiment of the present invention.
Embodiment
Fig. 1 represents first embodiment.Two splicing ear KL1-1 and KL1-2 are represented in the left side, connect line voltage on it.The filter of being made up of two capacitor C1 and C2 and two coupling coils of representing with FI1 is connected to the full bridge rectifier of being made up of diode D1-D4 on the line voltage terminal.Supply power voltage after the rectification is applied to intermediate circuit holding capacitor C6 by the diode D5-D8 that belongs to two pump branches, and it is represented at rightmost in the drawings.
For observing the relevant criterion about the mesh current harmonic wave, for example IEC 1000-3-2 also uses so-called pump circuit, and it requires relatively little circuit engineering expense.Rectifier is coupled with main energy memory, intermediate circuit C6 by an electronic pump switch at this in principle.Be connected with the output of the inverter that also will describe in detail by a pump network on the one hand at diode D5 and D7, the pump node that between D6 and D8, exists on the other hand.Thus during the half period of inverter frequency by this pump node from network voltage get can and to pump network intermediate storage.The energy of intermediate storage is diode D8 and D7 by an electronic pump switch here during the half period subsequently, guiding intermediate circuit holding capacitor C6.The rhythm and pace of moving things according to inverter frequency takes out energy from network thus.Described filter element suppresses corresponding spectral component, makes the final quasi sine mesh current of realizing receive.
The details of pump circuit is unimportant for the present invention.Here with reference to prior art particularly the applicant's application DE 103 03 276.2 and DE 103 03 277.0.
Intermediate circuit C6 gives the transducer power supply that is made of two switching transistor V1 and V2 as half-bridge here.Half-bridge transistors V1 and V2 are by the corresponding anti-phase alternation current potential that produces on their centre tap synchronously, and this current potential vibrates between two current potentials of rectifier output.This alternation current potential passes through two coupling capacitor C15, C16 by lamp choke LD1 with the series circuit of being made up of two discharge lamp LA1 and LA2 and spill current transformer TR2 that also will describe in detail below in this occasion and is connected with power supply branch.
Fig. 1 represents, this not only electric current can flow by the discharge plasma among lamp LA1 and the LA2, and the bottom electrode of winding of top electrode that preheat curent can be by last lamp LA1 and heating transformer TR1 and PTC resistance R 1 and following lamp LA2 is mobile.The preheat curent of the bottom electrode of the top electrode of following lamp LA2 and last lamp LA1 produces by heating transformer TR1.People as can be seen from Figure 1, poor at total lamp current of its winding on spill current transformer TR2 in nethermost winding is known by spill current transformer TR2 at last in Fig. 1 and the preheat curent by middle winding.In the occasion of having only a discharge lamp, can cancel heating transformer TR1 and current circuit thereof by internal electrode.
Preheat curent produces by the value of PTC resistance R 1 usually at warm-up phase.At warm-up phase, the value of R1 is at first so little, makes to realize one by the given electric current of lamp data in advance.Behind warm-up phase, the value of R1 raises, and makes last comparing with the discharging current of reality flow through a negligible heating current.
Described pre-heating device causes the heavy damping of a lamp resonant circuit that will illustrate below at warm-up phase, and makes eigenfrequency significantly be lower than the resonance frequency of the lamp resonant circuit of not damping thus.Be positioned at the inverter frequency work under the resonance frequency of lamp resonant circuit of not damping at warm-up phase with one, therefore help to realize high heating current and short warm-up phase.
The lamp resonant circuit also has resonating capacitor C5 and C9 except that already mentioned lamp choke LD1.Determining of resonance frequency by giving birth to by the C5 of C9 or series connection and the effective capacitance volume production of C9.
If described lamp resonant circuit is energized in the damping that weakens owing to the high value by R1 behind the warm-up phase and near the quality factor of the corresponding amplification its resonance frequency, then occur a high keep-alive voltage on lamp LA1 and LA2, this voltage is by the electrode guiding discharge lamp electricity combustion that is preheated.Lighting the back light resonant circuit as matching network, it is transformed to the output impedance of inverter the matched impedance of a discharge lamp that will move.
In addition, the lamp resonant circuit is also as the pump network.If the current potential on already mentioned pump node is lower than instantaneous line voltage, then this pump network obtains energy from electrical network.The energy of obtaining under opposite situation is exported to intermediate circuit C6.Another pumping action is produced by capacitor C8.This external capacitive body C8 also is used as the so-called trapezoidal capacitor of the switch unloading of half-bridge transistors V1 and V2.The pump network that is used for the second pump branch is made up of the series circuit of pump choke L1 and pump capacitor C10.
As the half-bridge transistors V1 of MOSFET equipment and V2 on their grid by one for example type be the integrated switching circuit control of international rectifier IR2153.This control circuit also comprises a high side driver, is used for the half-bridge transistors V1 of control " being in a high position ".Provide diode D9 and capacitor C4 on the one hand at this.
Control circuit and only comprise an oscillator except that the drive circuit that is used for half-bridge transistors V1 and V2, its frequency can be passed through terminal 2 and 3 (RT and CT) and set up.This frequency is corresponding to the running frequency of half-bridge.Between terminal 2 and 3, insert the resistor R 12 of a decision frequency.Insert emitter-collector electrode-span of a bipolar transistor T3 who determines the capacitor C12 of frequency and connect with it between the branch at terminal 3 with as following power supply of reference potential.With emitter-collector electrode-span access in parallel diode D15, so that can discharge and recharge to capacitor C12.Set up the half-bridge frequency by base terminal and the voltage between the reference potential, and therefore set up an adjustable parameter that is used for regulating circuit at bipolar transistor T3.The base terminal of bipolar transistor T3 is by the circuit part control in the expression of Fig. 1 the right.Therefore bipolar transistor and control circuit and affiliated for this reason wiring constitute an adjuster.
Control circuit and affiliated wiring also can by one arbitrarily the oscillating circuit of voltage or Current Control realize that this oscillating circuit is realized the control of transducer crystal pipe by drive circuit.
Adjuster is gathered lamp current as adjustable parameter in an embodiment, and the more accurate discharge lamp electric current of saying so.It is by the winding collection bottom of already mentioned spill current transformer TR2.Full bridge rectifier GL1 is a direct current with this current commutates, and guides reference potential into by a low ohm measuring resistance R21.By a low pass filter that is used to make up intermediate value that constitutes by resistance R 22 and R32 and capacitor C21, be added in the voltage drop on the R21 in the input of measuring amplifier of non-counter-rotating of an operational amplifier U2-A form.This point connects up by resistance R 23-R25 in known manner, and exports its output signal to above-mentioned adjuster input (adjustable parameter node) by diode D23.The closed thus current regulating circuit of representing as the continuous operation regulating circuit in advance.At this, when the current potential on tie point LD1-D21 was enough high, diode D23 was with the output of measuring amplifier U2-A and voltage divider D24, C20, R20, D16, R11 de.Wiring makes that in this configuration like this current potential on the anode of diode D23 does not take away initial value when having discharging current according to the present invention.This value is less than a limit transistor T3 and the therefore minimum value of the service area of limit regulator.Therefore need only this current potential under this minimum value, then potential fluctuation has no effect to the half-bridge frequency.Regulating circuit can not be closed thus.This initial value produces a half-bridge frequency corresponding to the beginning frequency.Select a lower frequency that guarantees high heating current and short warm-up phase at this by C12 and R12.
(LD1, C5 C9) mean a high capacity, therefore provide a protective circuit to avoid high keep-alive voltage here because the ignition phase that is right after preheating is for half-bridge switch V1 and V2 and lamp resonant circuit.But this protective circuit also makes up a voltage regulator circuit simultaneously is used to set up keep-alive voltage to a suitable value.A varistor D24 on the lamp side of lamp choke LD1 is used for this purpose.Replace metal-oxide varistor also can use pressure-sensitive diode or Zener diode here.That is relate to a threshold switch.By the series circuit of capacitor C20 and resistance R 20, be applied between two diode D16 from the modulating voltage of a definite threshold value.The anode of the diode on the left side is represented one second adjuster input.The value of resistance R 20 influences the back by the action intensity of described interference to regulating circuit.
Be configured for the quadergy and the yardstick that is used for keep-alive voltage of the vibration in the lamp resonant circuit by the modulating voltage of varistor D24 branch.If this voltage surpasses the threshold value of varistor D24, then the half-bridge frequency raises, and the minimizing of the quadergy of the vibration in resonant circuit thus, and modulating voltage reduces on the other hand.
A typical value for the threshold value of varistor D24 for example is 250V.Voltage regulator circuit is adjusted on this voltage at that time.
Flow through a lamp current after lighting, this electric current rises to a value to the current potential on the anode of diode D23, and this value is positioned at the service area of bipolar transistor T3, therefore flows through the regulating circuit of continuous operation regulating circuit (for lamp current).
On the other hand, when a modulating voltage is positioned on the threshold value of varistor D24, the current potential on this input will be raise by being used to control at the right of the tap between resistance R on the positive input terminal of amplifier U2-A 22 and the R23 diode D16.Above-mentionedly carry out once can continuous operation regulating circuit being worked according to the present invention under the new situation of lighting trial during in uncooled PTC resistance R 1 occurring thus.
Under such a case, that is this moment because a kind of " improper " glow discharge is only set up in the shortage preheating in discharge lamp LA1 and LA2, higher modulating voltage appears.Yet this improper glow discharge produces a rated value discharging current, and it is measured by the spill current transformer, and makes continuous operation regulating circuit work.Yet this influences the half-bridge frequency band now, and therefore at last disturbs rekindling of lamp by the off-resonance frequency.
Yet can block continuous operation regulating circuit by (bearing) component that on assembly D24, C20, R20, D16 non-counter-rotating input, applies high modulating voltage, make above-mentioned voltage regulator circuit maintenance work at resonance-amplifier U2-A.This will set up a suitable keep-alive voltage, can rekindle though make this lamp lack regular warm-up operation.Though a kind of like this ignition procedures is arduous to electrode, yet its final consideration is worked lamp.D24 is at bi-directional zener diode of this expression (perhaps pressure-sensitive diode or varistor in addition), with acting on uncoupled threshold component in different running statuses.
Fig. 2 represents second embodiment, different as follows with first embodiment of Fig. 1.For simplicity, omit the reference symbol that the element of big change is not arranged for its function of having represented in Fig. 1.
Different with the series circuit of two lamp LA1 in Fig. 1 and LA2, two lamp LA1 and LA2 reconfiguration are to the load in parallel circuit here.Therefore without any need for preheating transformer; More definite theory is passed through PTC resistance R 111 direct each lamp electrode of preheating for lamp LA1 by PTC resistance R 1 with for lamp LA2.
As the equipment that lamp current is measured, use spill current transformer TR2, but its different with Fig. 1 here lamp current of measuring lamp LA1.That is the lamp current of LA1 is used as adjustable parameter when lamp moves, and wherein the independent resonant circuit of lamp LA2 operates on the frequency of regulating into lamp LA1 simultaneously.But also can consider to constitute the lamp current that is conditioned by the component of two lamp currents (in this situation).
The bleeder circuit that is made of D24, C20 and R20 among Fig. 1 is here corresponding to the independent bleeder circuit that is made of C20, R17, D20, D50 on the other hand C22, R2, R9, D51 on the one hand, account for the controlling status by their each bigger current potentials, and be used for voltage regulator circuit by diode D5 and D13 blocking-up continuous operation regulating circuit with by diode D70 and D101 and resistance R 7.It relates to an XOR and connects.
That occur here on two symmetrical coupled capacitor C15 in Fig. 1 and the position of C16 is coupling capacitor C17 and C160.Be not both with Fig. 1 and have only a coupling capacitor to be connected on the lamp terminal here at every turn.Yet because relate to the parallel circuits (the even number parallel circuits that perhaps relates to lamp in general) of two lamps here, so it also represents a kind of solution of symmetry, consequently it does not produce the disadvantageous current loading to holding capacitor C6 (referring to Fig. 1).
Fig. 3 represents the 3rd embodiment, and it is different as follows with first embodiment's of Fig. 1.Here also omit reference symbol.
A unique discharge lamp LA1 only is provided at first here, makes and from Fig. 1, to remove heating transformer TR1.
Only there is a pump branch in addition, removed assembly D6-D8, C10, L1 thus.Here there is not any spill current transformer in addition.What replace it is to measure the lamp current (and being the load circuit electric current that multiplies each other with factor C16/ (C15+C16)) of connecting with coupling capacitor C16 by a measuring resistance R21, and by the base stage output of a resistance R 22 to the bipolar transistor T4 of substitution operation amplifier U2-A (impedance transformer).This bipolar transistor is used as the resonance-amplifier of continuous operation regulating circuit here.Diode D7 guarantees only to consider positive half wave when lamp current is measured, so that be suitable current potential of resonance-amplifier acquisition.
The lamp electrode of unique lamp LA1 here without preheating transformer directly passes through TISP/SIDAC D17 and 3 preheatings of PTC resistance R.For adjusting that is suppressed at the load circuit electric current that flows through when preheating and point are lit a lamp LA1 and the voltage-regulation that allows to pass through C20, D24, R20, D16, utilization is in big voltage drop on PTC resistance R 3 under this operational mode, so that inject a negative current and locking bipolar transistor T4 thus by C17 and D8.
RC network R22/C21 is similar to Fig. 1 and sets up the arithmetic intermediate value of the voltage that is proportional to lamp current on the R21, and it outputs to VCO input (base stage T3) by emission follower T4.Negative voltage on diode D16 restricted T 4 base stages is to its conducting voltage, series circuit D10/D11 by D17 with the electric current positive half wave switch to reference potential (), be added in the positive voltage on the base stage of T4 when need not to limit the lamp operation.
Claims (10)
- But 1. be used at least one discharge lamp with preheating electrode (described ballast has for LA1, electric ballast LA2):Continuous operation regulating circuit (TR2, GL1, R21-25,32, C21, U2-A, D23, C4, D9, RT, CT, R12, C12, T3, D15; D7 T4), is used for regulating continuous operating lamp current of lamp or lamp power by the running frequency of lamp;Element (R1 warm-up time of determining electrode warm-up time, R111, R3), it is designed to by a physical process with time delay operation regulation warm-up time and allows to reverse this process with a time delay then, wherein, described ballast design for when warm-up time element physical process make lamp not rely on continuous operation regulating circuit when finishing to light;It is characterized in that described ballast is following purpose design in addition, as element (R1, R111 warm-up time, R3) because still unclosed reversing of its physical process and (LA1 in the time of LA2) can not stipulating any complete new warm after the outage, is used in lamp continuous operation regulating circuit (TR2, the GL1 of operation continuously at lamp, R21-25,32, C21, U2-A, D23, C4, D9, RT, CT, R12, C12, T3, D15; D7, T4) inoperative, make that lamp can be independent of continuous operation regulating circuit and light at that time.
- 2. according to the ballast of claim 1, wherein, realize not making continuous operation regulating circuit (TR2, GL1, R21-25,32, C21, U2-A, D23, C4, D9, RT, CT, R12, C12, T3, D15 by following manner; D7, T4) effect promptly applies the time component of at least one modulating voltage at an input of the resonance-amplifier (U2-A) of continuous operation regulating circuit or switching transistor (T4).
- 3. according to the ballast of claim 1 or 2, wherein, warm-up time element comprise a PTC resistance (R1, R111, R3).
- 4. according to the ballast of claim 3, wherein, the threshold component (D17) of connecting with PTC resistance (R3), its not conducting when being lower than the voltage threshold of a regulation.
- 5. according to the ballast one of among the aforementioned claim 1-2, wherein, the lamp electrode is carried out continuous operation regulating circuit (R21,22, D7 with the coupling capacitor (C16) that power supply branch is connected with being in series with one, T4, C4, D9, RT, CT, R12, C12, T3, lamp current D15) is measured.
- 6. according to the ballast of claim 5, wherein, provide diode (D7), the feasible half-wave of only when the lamp current of series connection is measured, considering each lamp current for this reason.
- 7. according to the ballast one of among the claim 1-2, wherein, carry out continuous operation regulating circuit (TR2, GL1 by a spill current transformer (TR2), R21-25,32, C21, U2-A, D23, C4, D9, RT, CT, R12, C12, T3, D15) lamp current is measured, and at this, the spill current transformer is set up the poor of total lamp current and heated by electrodes electric current when measuring.
- 8. according to the ballast one of among the aforementioned claim 1-2, has voltage regulator circuit (D24, C20, R20, D16, C4, D9, RT, CT, R12, C12, T3, a D15; D50, D51, R9, R2, R17, R7, C22, D101 D70), is used for setting up lamp resonant circuit (LD1, C5, a C9 for the frequency of lamp resonant circuit power supply by influence; LD2; L1) keep-alive voltage.
- 9. according to the ballast of claim 2, it is the lamp (LA1 of a plurality of parallel connections of operation, LA2) design, wherein, on an input of resonance-amplifier (U2-A) or switching transistor, connect (D5 by an XOR, D13) apply the time component of modulating voltage, perhaps apply the parameter directly related of the lamp of described a plurality of parallel connections with this modulating voltage.
- But 10. be used to drive discharge lamp with preheating electrode (LA1, method LA2), wherein:Use element warm-up time (R1, R111 R3) come regulation warm-up time, wherein in described warm-up time element with physical process of a time delay operation, allow this physical process of reversing with a time delay then;Preheating electrode during warm-up time;The physical process end time point of element is lit a lamp when warm-up time;When lamp moves continuously, use continuous operation regulating circuit (TR2, GL1, R21-25,32, C21, U2-A, D23, C4, D9, RT, CT, R12, C12, T3, a D15; D7 T4) regulates lamp current or lamp power by running frequency;It is characterized in that, in the method, as element (R1, R111 warm-up time, R3) because still unclosed reversing of its physical process and (LA1 in the time of LA2) can not defining any new warm after the outage, is used in continuous operation regulating circuit (TR2, the GL1 of continuous operation at lamp, R21-25,32, C21, U2-A, D23, C4, D9, RT, CT, R12, C12, T3, D15; D7, T4) inoperative and make lamp be independent of continuous operation regulating circuit at that time and light.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004025774A DE102004025774A1 (en) | 2004-05-26 | 2004-05-26 | Ballast for discharge lamp with continuous operation control circuit |
| DE102004025774.4 | 2004-05-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1703135A CN1703135A (en) | 2005-11-30 |
| CN1703135B true CN1703135B (en) | 2011-01-26 |
Family
ID=34936351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2005100783604A Expired - Fee Related CN1703135B (en) | 2004-05-26 | 2005-05-26 | Ballast for discharge lamp with continuous operation regulating circuit and drive method of the lamp |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US7355348B2 (en) |
| EP (1) | EP1601237A3 (en) |
| CN (1) | CN1703135B (en) |
| CA (1) | CA2508131A1 (en) |
| DE (1) | DE102004025774A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004044180A1 (en) * | 2004-09-13 | 2006-03-16 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Electronic ballast with pumping circuit for discharge lamp with preheatable electrodes |
| DE202008008165U1 (en) * | 2008-06-18 | 2009-11-05 | Tridonicatco Gmbh & Co. Kg | Operating device for gas discharge lamps or other lamps with lamp current measurement |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6448713B1 (en) * | 2000-12-07 | 2002-09-10 | General Electric Company | Sensing and control for dimmable electronic ballast |
| CN1386393A (en) * | 2000-07-20 | 2002-12-18 | 皇家菲利浦电子有限公司 | System and method for determining the frequency of longitudinal mode required for color mixing in a discharge lamp |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1026817A (en) * | 1972-05-09 | 1978-02-21 | Michel Remery | Electrical circuit for igniting and supplying a discharge lamp |
| DE3901111A1 (en) | 1989-01-16 | 1990-07-19 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | CIRCUIT ARRANGEMENT FOR THE OPERATION OF DISCHARGE LAMPS |
| DE4140557A1 (en) | 1991-12-09 | 1993-06-17 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | CIRCUIT ARRANGEMENT FOR OPERATING ONE OR MORE LOW-PRESSURE DISCHARGE LAMPS |
| IL105564A (en) * | 1993-04-30 | 1996-06-18 | Ready Light Energy Ltd | Discharge dimmer lamp |
| DE19520999A1 (en) * | 1995-06-08 | 1996-12-12 | Siemens Ag | Circuit arrangement for filament preheating of fluorescent lamps |
| DK0752804T3 (en) * | 1995-07-05 | 2000-05-15 | Magnetek Spa | Supply circuits for discharge lamps with means for preheating the electrodes |
| US6008587A (en) * | 1996-02-29 | 1999-12-28 | Mills; Robert | Fluorescent lamp electronic ballast control circuit |
| DE19708792A1 (en) * | 1997-03-04 | 1998-09-10 | Tridonic Bauelemente | Method and device for detecting the rectification effect occurring in a gas discharge lamp |
| DE19923945A1 (en) * | 1999-05-25 | 2000-12-28 | Tridonic Bauelemente | Electronic ballast for at least one low-pressure discharge lamp |
| DE60125214T2 (en) * | 2000-10-20 | 2007-11-15 | International Rectifier Corp., El Segundo | BALLAST CONTROL IC WITH POWER FACTOR CORRECTION |
| DE10303276A1 (en) | 2003-01-28 | 2004-07-29 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Starter circuit for electrical discharge lamp uses a limit setting switch to provide inputs of controller to set inverter frequency |
| DE10345610A1 (en) * | 2003-09-29 | 2005-05-12 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Method for operating at least one low-pressure discharge lamp |
| US7187132B2 (en) * | 2004-12-27 | 2007-03-06 | Osram Sylvania, Inc. | Ballast with filament heating control circuit |
-
2004
- 2004-05-26 DE DE102004025774A patent/DE102004025774A1/en not_active Withdrawn
-
2005
- 2005-05-10 EP EP05010155A patent/EP1601237A3/en not_active Withdrawn
- 2005-05-24 CA CA002508131A patent/CA2508131A1/en not_active Abandoned
- 2005-05-24 US US11/135,461 patent/US7355348B2/en not_active Expired - Fee Related
- 2005-05-26 CN CN2005100783604A patent/CN1703135B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1386393A (en) * | 2000-07-20 | 2002-12-18 | 皇家菲利浦电子有限公司 | System and method for determining the frequency of longitudinal mode required for color mixing in a discharge lamp |
| US6448713B1 (en) * | 2000-12-07 | 2002-09-10 | General Electric Company | Sensing and control for dimmable electronic ballast |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102004025774A1 (en) | 2005-12-22 |
| CA2508131A1 (en) | 2005-11-26 |
| US7355348B2 (en) | 2008-04-08 |
| EP1601237A2 (en) | 2005-11-30 |
| EP1601237A3 (en) | 2009-07-08 |
| US20050264243A1 (en) | 2005-12-01 |
| CN1703135A (en) | 2005-11-30 |
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